During world war ii, the battle of guadalcanal was significant because it was the first decisive victory for american naval forces. evened out the naval strength of the japanese and us navies. was the first major allied offensive against japanese forces. allowed japan to construct an airfield from which to attack the allies.

The correct answer is was the first major Allied offensive against Japanese forces

Up until that point, the offensives against Japan were much smaller in scale and did not have the participation of numerous allied countries as it was mostly American soldiers who attacked. In the battle of Guadalcanal, the Americans attacked together with the British army and with the Australian army in order to fight Japan in the Pacific.

During World War II, the Battle of Guadalcanal was significant because "was the first major Allied offensive against Japanese forces" since this was unprecedented. 

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